>>11325594
Honestly though if a yandere is so like that then you might actually need to cage them up a lot to actually make good on your promises of protection to her sisters. A better option is to heavily train her alongside her sisters, build that kind of bond with eachother that would spread the yandere around a bit. This is why small harems are the best, although honestly you might only be able to do this successfully with a pair.

They see one of those cats in public. She's being aloof but still respectful and servile, as they often are. Rather than having one girl hold the other back since she's just tearing through saying the most awful things while trying to get at her for not showing respect, instead they merely get a slightly more painful than usual collective punishment for raising their voice at the neko telling her that she needs to show better deference. A good improvement. It is still completely wrong for them to talk to any other living thing that way, even another slave.